Trick to know when your friend was Last Seen on Whatsapp

Many of your friends on Whatsapp might have disabled Last Seen option, so that you can’t track them online.
So here is simple trick to know if he/she is online or offline.

Watchdog is cool app for android which will spy on your Whatsapp friends. With the help of this app, you can know whether your boyfriend/girlfriend is cheating you or not. Watch dog will keep all records of log out/last seen time even if the contract has disabled it.Download watchdog for android